Is there a software entry to USART (2.2) bootloader (STM32F103)?

[okelly]

Posted on January 19, 2015 at 20:37

Hello all,

I am tasked with implementing firmware upgrade on an STM32F103 project. USB DFU is not available for this chip.After some reading, I see two approaches available:

1. Feed the STM32 USART bootloader from an attached serial Bluetooth module.
2. Boot from SD card image. 

For the Bluetooth approach, I want to learn how to get USART1 into bootloader mode. Unfortunately, I do not have control of boot0 and boot1 pins. Is there a way to put the USART into bootloader mode without using the boot pin pattern? 

For the SD design, I have seen several projects that could help.Thanks and regards,Owen #iap #bootloader #dfu #bluetooth

[Tesla DeLorean]

Posted on January 19, 2015 at 20:42

I've covered this a couple of times, this is from 2009

[DEAD LINK /public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/STM32%20Internal%20Bootloader&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B&currentviews=6538]https://my.st.com/public/STe2ecommunities/mcu/Lists/cortex_mx_stm32/Flat.aspx?RootFolder=%2Fpublic%2FSTe2ecommunities%2Fmcu%2FLists%2Fcortex_mx_stm32%2FSTM32%20Internal%20Bootloader&FolderCTID=0x01200200770978C69A1141439FE559EB459D7580009C4E14902C3CDE46A77F0FFD06506F5B¤tviews=6538 The bootloader expects 8 E 1 (Even Parity), the F1 design cannot remap the ROM at ZERO

[okelly]

Posted on January 21, 2015 at 18:49

Thank you, that was very helpful.